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In Reply to: RE: problem with first order network posted by KanedaK on August 08, 2016 at 16:48:41
ALK uses a very small woofer inductor.
Use 2.5mH and a 128µF capacitor.
(as used in many AK and AL networks)
Follow Ups:
I have more questions :)
1) a 1st order network allows for a correct phase transition between drivers. What happens if you have 12dB low pass on the woofer, and 6dB high pass on the midrange? Does it still integrate smoothly? I know for a fact that my midrange drivers are "phase/time aligned" by ears; there's this location in depth were it suddenly all snaps in together (I'm able to do this because my midrange horn is in a separate enclosure from the bass horn, and it's also much shorter than a K400, wich allows for some back and forth moves). Will I lose this by combining second order with first order?
2) now might be the time to try bi-amping my speakers. I could electronically filter the bass bins, say, 24dB linkwitz-riley and leave the mids and highs cinnected to the ALK crossovers, with an 8ohm resistor to simulate the woofer. In that case the mid-high amp signal wouldn't pass trough an active crossover (or a line-level passive crossover) wich would avoid messing up with transparency and resolution.
"1) a 1st order network allows for a correct phase transition between drivers. "
Sure, if both drivers are dead flat for two and a half octaves on either side of the crossover point, and they are time-aligned.
I might try those values on this horn and compare (- could use another one of those Community 12 if Parts Express has one laying around - have not tried 12pe32)wonder how SM120 behaves with first order highpass and K55? - with no swamping resistor and perhaps 1829, I remember a scooped "devils horn sign" response shape. The old cowbell Altec 511 makes a good rock midhorn imo.
wonder if my LE5 were this weak back in the days of using with
K-horn and Edgar System 100 (?)
7 cubic foot package
Karlson Evangelist
Edits: 08/08/16 08/08/16
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